Figure 2From: The sharp bounds on general sum-connectivity index of four operations on graphs The graphs \(\pmb{P_{4}+_{S}P_{4}}\) , \(\pmb{P_{4}+_{R}P_{4}}\) , \(\pmb{P_{4}+_{Q}P_{4}}\) and \(\pmb{P_{4}+_{T}P_{4}}\) . Back to article page